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The element that exhibits negative oxida...

The element that exhibits negative oxidation state in IIIA group is

A

B

B

Al

C

Ga

D

TI

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To determine which element in the IIIA group exhibits a negative oxidation state, we will analyze the elements present in this group and their oxidation states. ### Step-by-Step Solution: 1. **Identify the Elements in Group IIIA:** The elements in Group IIIA (or Group 13) of the periodic table are: - Boron (B) - Aluminium (Al) - Gallium (Ga) - Indium (In) - Thallium (Tl) 2. **Determine the Nature of Each Element:** - Boron is a non-metal. - Aluminium, Gallium, Indium, and Thallium are metals. 3. **Analyze the Oxidation States:** - Boron typically exhibits a +3 oxidation state due to its ability to lose three electrons. However, it can also accept electrons due to its small size and high electronegativity, allowing it to exhibit a -3 oxidation state. - The metals (Aluminium, Gallium, Indium, Thallium) primarily exhibit positive oxidation states (+3 or +1) and do not typically show negative oxidation states. 4. **Conclusion:** Given that boron is the only element in the IIIA group that can exhibit a negative oxidation state, the answer to the question is: - **Boron (B)** exhibits a negative oxidation state of -3. ### Final Answer: The element that exhibits a negative oxidation state in the IIIA group is **Boron (B)**. ---
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